There is (or
at least there used to be) a free
version and there are several paid versions:
Standard, Pro (now also on MacOS), HTML5 and
STUDIO. Made for MacOS and
Windows. Paid versions have more features,
some can publish to HTML 5 and various
portable devices: Android, iOS (iPad/iPhone)
and more....

See an example of a
non-game
educational application
made with Gamemaker:

If you've always
wanted to
learn to make games, this is for you - a
great way to start. No programming skills
needed to get started, just drag, create resources
such as sounds and sprites, create 'objects' with
ease and assign properties - BEAUTIFUL!

The basic version is free. Even this free
version is stunning. It includes image editing and
animation tools.